2620608400 has 60 divisors (see below), whose sum is σ = 6357237952. Its totient is φ = 1038049920.

The previous prime is 2620608377. The next prime is 2620608407. The reversal of 2620608400 is 48060262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620608407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9397 + ... + 73003.

Almost surely, 2^2620608400 is an apocalyptic number.

2620608400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2620608400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3178618976).

2620608400 is an abundant number, since it is smaller than the sum of its proper divisors (3736629552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2620608400 is a wasteful number, since it uses less digits than its factorization.

2620608400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63728 (or 63717 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2620608400 is about 51191.8782620837. The cubic root of 2620608400 is about 1378.6923831492.

Adding to 2620608400 its reverse (48060262), we get a palindrome (2668668662).

The spelling of 2620608400 in words is "two billion, six hundred twenty million, six hundred eight thousand, four hundred".